Magnetism Quiz

What is magnetism?

• The force exerted by magnets when they attract or repel each other

• The force exerted by magnets when they attract or repel electric charges

• The force exerted by magnets when they attract or repel light particles

• The force exerted by magnets when they attract or repel heat energy

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NGSS.MS-PS2-5

Every substance in the universe is made up of tiny units called __.

• magnets

• atoms

• cells

• potato chips

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Atoms have ___, particles which carry electrical charges.

• electrons

• nuclei

• cells

• potato chips

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Electrons spin around the center of an atom.

• Yes

• No

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What causes magnetism?

• The motion of electric charges

• The motion of protons and neutrons

• The motion of the ocean

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Electrons can spin in different directions.

• Yes

• No

Why are materials like cloth or paper weakly magnetic?

• Because equal numbers of electrons spin in opposite directions, canceling out their magnetism

• Because they have a low concentration of iron oxide

• Because they are not exposed to strong magnetic fields

• Because they are made up of non-magnetic atoms

What makes substances like iron, cobalt, and nickel strongly magnetic?

• Most of the electrons spin in the same direction

• They have a high concentration of iron oxide

• They are exposed to strong magnetic fields

• They have a high concentration of protons

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What generates Earth's magnetic field?

• The movement of molten metal in Earth's outer core

• The movement of water in Earth's oceans

• The movement of air in Earth's atmosphere

What is the purpose of a magnetic compass?

• To navigate using Earth's magnetic field

• To generate electricity

• To measure the strength of a magnetic field

• To attract or repel other magnets